My team and I are trying to come up with some possible solutions for a site expansion. Currently our building provides all network necessities to upwards of 1000+ clients. Now we are expanding into a second location.
What we want though is to route all of the activity of the second location back to our first, central, location - so we are not building our infrastructure from the ground up. Thus routing all activity through our current server room with all of our backup and firewall, etc.
The second location is two or three city blocks away. Obviously we could lay down some fiber, but that is very costly. We could also VPN, but that has its limitations as well.